Method for preparing functional composite powder and functional composite powder

Abstract

The present disclosure relates to a method for preparing a functional composite powder and a functional composite powder, and more particularly, to a method for preparing a functional composite powder, the method including the steps of: preparing a metal material powder and an implantation material; adding the metal material powder and the implantation material into a mixer; and forming a functional composite powder by applying kinetic energy to the metal material powder and the implantation material in the mixer, and a functional composite powder prepared by the method.

What is claimed is: 
     
       1. A spherical functional composite powder in which an implantation material layer is formed on metal material particles, the implantation material layer includes a dispersion layer of an implantation material, a shell layer, or both thereof, and the implantation material layer contains a mechanical residual stress, wherein the functional composite powder has a size of 10 to 200 μm, the metal material particles are spheroidized metal material particles, and a surface of the spheroidized metal material particles is satellite-free; and wherein at least a portion of the implantation material layer penetrates into the metal material particles at 1 to 80% of the total thickness of the implantation material. 
     
     
       2. The functional composite powder of  claim 1 , wherein the implantation material layer includes a single layer or a plurality of layers, the implantation material layer has a thickness of 0.01 to 15 μm. 
     
     
       3. The functional composite powder of  claim 1 , wherein the dispersion layer contains one or two or more types of the implantation materials, the dispersion layer contains the implantation material dispersed and applied on the metal material particles, the shell layer, or both thereof, the dispersion layer is a single layer or a plurality of layers, and a portion of the dispersion layer penetrates into an inside of the metal material particles, the shell layer, or both thereof. 
     
     
       4. The functional composite powder of  claim 1 , wherein the shell layer contains the implantation material surrounding the metal material particles, the dispersion layer, or both thereof, the shell layer is a single layer or a plurality of layers, and the plurality of layers is the same, or is different in components, thickness, or both thereof. 
     
     
       5. The functional composite powder of  claim 1 , wherein a surface of the shell layer is satellite-free. 
     
     
       6. The functional composite powder of  claim 1 , wherein the shell layer contains fine grains, and the fine grains are grains of sub-micrometer unit. 
     
     
       7. The functional composite powder of  claim 1 , wherein the shell layer contains one or two or more types of the implantation materials, and the shell layer contains a first implantation material that is a base material of the shell layer, and further contains a second implantation material dispersed within a matrix of the first implantation material. 
     
     
       8. The functional composite powder of  claim 1 , wherein the implantation material layer includes: a first dispersion layer formed on the metal material particles; and a shell layer surrounding the first dispersion layer, and further includes a second dispersion layer formed on the shell layer, and a portion of the first dispersion layer penetrates into an inside of the metal material particles. 
     
     
       9. The functional composite powder of  claim 1 , wherein the implantation material layer includes: a first shell layer formed on the metal material particles; and a second shell layer which is formed on the first shell layer and surrounds the first shell layer, and further includes a dispersion layer formed on the first shell layer, the second shell layer, or both thereof.